77.5×0.125 0.25×1.25简算写错啦......是77.5×0.125+0.25×1.25啊

问题描述:

77.5×0.125 0.25×1.25简算
写错啦......是77.5×0.125+0.25×1.25啊

77.5×0.125+0.25×1.25
=77.5×0.125+2.5×0.125
=0.125×(77.5+2.5)
=0.125×80
=0.125×8×10
=1×10
=10